Lubricant gun



s. c. JUINER.

LUBRICANT GUN. APPLICATION FILED APR.24. I920 Patented Jan. 31, 1922.

rarest seat ca] SEABORN C. .TOINER. OF LOS ANGELES. CALIFORNIA, ASSIGNOR Tb CRITZ MAhTUFAC- TUBING COMPANY, OF SANTA MARIA, CALIFORNIA, A CORPORATION OF CALL FORNIA.

LUBRICANT GUN.

Specification of Letters Yatent.

Patented Jan. 3t, 1922.

Application filed April 24, 1920. Serial No. 376,227.

Be it. known that I. Seanonx C. JOINER, a'citizen of the United States. residing at Los Angeles. in the county of Los Angeles and State of California. have invented a new and useful Lubricant Gun, of which the following is a specification.

This invention relates to lubricant guns of the character employed in forcing lubricant into a bearing or between members where friction is liable to occur.

An object of this invention is to make provision for unscrewing of the cylinder or rap by operation of the plunger rod.

Another object is to improve the device preventing rotation of the plunger..

Other objects and advantages will appear in the subjoined detailed description.

The accompanying drawings illustrate the invention. I

Figure 1 is a broken side elevation, partly in mid section, of a. lubricant gun constructed in accordance with the provisions of this invention.

Fig. 2 is a plan by 411 -33 Fig. 1'.

Fig. 3 is an inverted plan section on line indicated by co -m Fig. 1. I

The lubricant gun comprises a cylinder 1 which is reduced at one end to form an angular conduit 2 that is provided with a pivotally mounted nozzle 3. This nozzle may be of any desired construction. The opposite end of the cylinder 1 is screwthreaded into a cap 4 provided with an axial opening 5 through which extends a plunger rod 6. The plunger rod is provided inside of the cap 4 with a shoulder 7 to engage with an inner face of the cap and section on line. indicated thus prevent outward endwise movement of the plunger rod. The outer end of the rod 6 is provided with a handle 8, the hub 9 of Whlch forms a shoulder adapted to engage the outer end of a sleeve 10 which surrounds the outer; projecting ,end of the rod 6. The sleeve' and hub limit endwise I movement of the plunger rod inwardly. The

plunger rod 6 is provided with screw threads 11. preferably left hand.

Engaging the screw threads 11 is a nut 12 of a plunger indicated in general by the character, 13. The plunger 13 is provided with an abutment 14 which may be formed in any suitable manner. In this particular instance the abutment,14 comprises a collar 1a through which the nut 12 extends,

and also comprises an upstanding flange 16 which engages opposite flat faces 17 of the.

nut 12. The collar15 is provided at one side with a semi-circular'or curved roove 18 in which is accommodated one en of a circular or curved spring member 19. The member 19 is firmly clamped against a washer 23 by-the collar 15. said washer encircling the nut 12 and forming a portion or clockwise. the member 19 will be held in the groove 20 and thus prevent rotation of the plunger 13. \Vhen the rod 11 is thus turned clockwise it causes the plunger 13 to move toward the conduit 2 so as to force lubricant, not shown, in front of the plun-- get through the conduit 2 and nozzle 3 to whatever receptacle, not shown. the nozzle 3 may be engaged with.

When the rod 11 is turned counter-clockwise. the plunger 13 is moved toward the. cap 4 and is held against rotation by the pressure of the member 19 against the inner surface of. the cylinder 1-, and if the rod be turned sutiiciently to move the-plunger 13 into the cap 4. The member 19 engages the inner surface of the capand the abutment 1t engages with an abutment 21 projecting from the inner faceof the cap. When'such engagement of the abntments 14, 21 occurs, the cap 4 may be removed by continuing to turn the 'rod 11'counter-cloclnvise, thus turn: ing the cap 4 relative to the cylinder 1, the screw-threaded connection 22 between the cap and cylinder being right hand, inthis' instance It is'to be iinderstood that the invention is not limited to the exact details of construction shown in the drawings and above inga shoulder inside of the cap and hav 110 der engaging the screw-threads. 'means to prevent rotation of the plunger relative to the cylinder, an. abutment on the oup,- and an abutment on the, plunger adapted to engage the -tiret abutment when the rod is turned.

2. In a lubricant gun, a cylinder having a longitudinal groove, a rap at one end of the cylinder. a rod passing tlirouglrtlie cap and having a shoulder inside of the rap and having sere\v-tl1rr- .nds, a plunger including awasher and a nut. the nut engaging the screw-threads, a collar between the nut and Washer provided with a groove. and a memher mounted in the last groove and having one end engaging the first groove.

3. In 1i lubricant gun. a cylinder having a longitudinal groove, a ran at one end of the cylinder. :1 rod passingthrough the cap and having a shoulder inside of the cap and having screw-threads, a plunger including a washer anda nut, a roller between the nut and Washer, and a member clamped between the collar and washer and having one end engaging the groove.

4. In a lubricant gun, a cylinder. a rap screw-threaded onto one end of the cylinder, a screw-threaded rod extending through the cap into the cylinder. :1 plunger engagin; the screw-threads of the rod. means to prevent turning of the plunger relative to the cylinder. and means operative by turn ing of the rod in one direetionto unscrew the cap from the cylinder.

Si ned at Los Angeles. California. this 9th day of April, 1920.

SEABORS t. JOIXER. 

